diff --git a/solr/solr-ref-guide/build.gradle b/solr/solr-ref-guide/build.gradle
index 3567d88c2e3..652aa378206 100644
--- a/solr/solr-ref-guide/build.gradle
+++ b/solr/solr-ref-guide/build.gradle
@@ -52,6 +52,11 @@ plugins {
     id 'com.github.jruby-gradle.base' version '2.0.0-alpha.7'
 }
 
+// This project does not contribute anything to main dependencies.
+versionsLock {
+    testProject()
+}
+
 description = 'Solr reference guide'
 
 // Use an internal proxy to ruby gems.
diff --git a/versions.lock b/versions.lock
index 31b2ae55168..6670238149f 100644
--- a/versions.lock
+++ b/versions.lock
@@ -1,6 +1,5 @@
 # Run ./gradlew --write-locks to regenerate this file
 com.adobe.xmp:xmpcore:5.1.3 (1 constraints: 0b050a36)
-com.beust:jcommander:1.35 (1 constraints: b50c1901)
 com.carrotsearch:hppc:0.8.2 (2 constraints: b00ffaa6)
 com.carrotsearch.randomizedtesting:randomizedtesting-runner:2.7.6 (1 constraints: 11051036)
 com.carrotsearch.thirdparty:simple-xml-safe:2.7.1 (1 constraints: a60a82ca)
@@ -12,12 +11,6 @@ com.fasterxml.jackson.core:jackson-core:2.10.1 (3 constraints: 633586b7)
 com.fasterxml.jackson.core:jackson-databind:2.10.1 (3 constraints: 941aba96)
 com.fasterxml.jackson.dataformat:jackson-dataformat-smile:2.10.1 (1 constraints: 3605303b)
 com.github.ben-manes.caffeine:caffeine:2.8.4 (1 constraints: 10051136)
-com.github.jnr:jffi:1.2.18 (1 constraints: b20902ab)
-com.github.jnr:jnr-constants:0.9.12 (4 constraints: ed2c9d5d)
-com.github.jnr:jnr-enxio:0.19 (2 constraints: 2a167d08)
-com.github.jnr:jnr-netdb:1.1.6 (1 constraints: 7e0952a1)
-com.github.jnr:jnr-posix:3.0.49 (2 constraints: f0161b5b)
-com.github.jnr:jnr-unixsocket:0.20 (1 constraints: 4a09d497)
 com.github.virtuald:curvesapi:1.06 (1 constraints: db04f530)
 com.github.zafarkhaja:java-semver:0.9.0 (1 constraints: 0b050636)
 com.google.code.findbugs:annotations:3.0.1 (1 constraints: 0605fb35)
@@ -29,22 +22,15 @@ com.google.protobuf:protobuf-java:3.11.0 (1 constraints: 3705383b)
 com.google.re2j:re2j:1.2 (1 constraints: a7041c2c)
 com.googlecode.juniversalchardet:juniversalchardet:1.0.3 (1 constraints: 0605f335)
 com.googlecode.mp4parser:isoparser:1.1.22 (1 constraints: 38052d3b)
-com.headius:backport9:1.1 (1 constraints: 1a098c8e)
-com.headius:invokebinder:1.11 (1 constraints: 4b09d797)
-com.headius:modulator:1.0 (1 constraints: 19098b8e)
-com.headius:options:1.4 (1 constraints: 1d098f8e)
 com.healthmarketscience.jackcess:jackcess:3.0.1 (1 constraints: 0605fb35)
 com.healthmarketscience.jackcess:jackcess-encrypt:3.0.0 (1 constraints: 0505fa35)
 com.ibm.icu:icu4j:62.2 (1 constraints: de040d31)
 com.jayway.jsonpath:json-path:2.4.0 (1 constraints: 08050136)
-com.jcraft:jzlib:1.1.3 (1 constraints: 7b094fa1)
 com.lmax:disruptor:3.4.2 (1 constraints: 0b050836)
-com.martiansoftware:nailgun-server:0.9.1 (1 constraints: 800960a1)
 com.pff:java-libpst:0.8.1 (1 constraints: 0b050436)
 com.rometools:rome:1.12.2 (1 constraints: 3805313b)
 com.rometools:rome-utils:1.12.2 (1 constraints: 3805313b)
 com.tdunning:t-digest:3.1 (1 constraints: a804212c)
-com.vaadin.external.google:android-json:0.0.20131108.vaadin1 (1 constraints: 34092a9e)
 commons-cli:commons-cli:1.4 (1 constraints: a9041e2c)
 commons-codec:commons-codec:1.13 (1 constraints: d904f430)
 commons-collections:commons-collections:3.2.2 (1 constraints: 09050236)
@@ -76,7 +62,6 @@ io.prometheus:simpleclient_common:0.2.0 (2 constraints: e8159ecb)
 io.prometheus:simpleclient_httpserver:0.2.0 (1 constraints: 0405f135)
 io.sgr:s2-geometry-library-java:1.0.0 (1 constraints: 0305f035)
 javax.servlet:javax.servlet-api:3.1.0 (3 constraints: 75209943)
-joda-time:joda-time:2.9.9 (1 constraints: 8a0972a1)
 junit:junit:4.12 (1 constraints: db04ff30)
 net.arnx:jsonic:1.2.7 (2 constraints: db10d4d1)
 net.hydromatic:eigenbase-properties:1.1.5 (1 constraints: 0905f835)
@@ -140,8 +125,6 @@ org.apache.velocity.tools:velocity-tools-view-jsp:3.0 (1 constraints: a704202c)
 org.apache.xmlbeans:xmlbeans:3.1.0 (1 constraints: 0605fd35)
 org.apache.zookeeper:zookeeper:3.6.1 (1 constraints: 0c050d36)
 org.apache.zookeeper:zookeeper-jute:3.6.1 (1 constraints: 8a0d3828)
-org.asciidoctor:asciidoctorj:1.6.2 (1 constraints: 0b050436)
-org.asciidoctor:asciidoctorj-api:1.6.2 (1 constraints: e30cfb0d)
 org.aspectj:aspectjrt:1.8.0 (1 constraints: 0b050836)
 org.bitbucket.b_c:jose4j:0.6.5 (1 constraints: 0d050236)
 org.bouncycastle:bcmail-jdk15on:1.64 (1 constraints: df04ff30)
@@ -188,13 +171,6 @@ org.gagravarr:vorbis-java-core:0.8 (1 constraints: ac041f2c)
 org.gagravarr:vorbis-java-tika:0.8 (1 constraints: ac041f2c)
 org.hamcrest:hamcrest:2.2 (1 constraints: a8041f2c)
 org.jdom:jdom2:2.0.6 (1 constraints: 0a05fb35)
-org.jruby:dirgra:0.3 (1 constraints: 1b098b8e)
-org.jruby:jruby:9.2.6.0 (1 constraints: 490d7d28)
-org.jruby:jruby-core:9.2.6.0 (1 constraints: 0f08b57d)
-org.jruby:jruby-stdlib:9.2.6.0 (1 constraints: 0f08b57d)
-org.jruby.jcodings:jcodings:1.0.41 (2 constraints: e3124361)
-org.jruby.joni:joni:2.1.25 (1 constraints: b00903ab)
-org.jsoup:jsoup:1.12.1 (1 constraints: 3705303b)
 org.locationtech.spatial4j:spatial4j:0.7 (1 constraints: ab041e2c)
 org.ow2.asm:asm:7.2 (2 constraints: 900e3e5e)
 org.ow2.asm:asm-commons:7.2 (1 constraints: ad042e2c)
@@ -203,7 +179,6 @@ org.restlet.jee:org.restlet.ext.servlet:2.4.3 (1 constraints: 0b050436)
 org.rrd4j:rrd4j:3.5 (1 constraints: ac04252c)
 org.slf4j:jcl-over-slf4j:1.7.24 (1 constraints: 4005473b)
 org.slf4j:slf4j-api:1.7.24 (18 constraints: 64f415d2)
-org.slf4j:slf4j-simple:1.7.24 (1 constraints: 4005473b)
 org.tallison:jmatio:1.5 (1 constraints: aa041f2c)
 org.tukaani:xz:1.8 (1 constraints: ad04222c)
 org.xerial.snappy:snappy-java:1.1.7.6 (1 constraints: 6f05a240)
@@ -211,7 +186,22 @@ ua.net.nlp:morfologik-ukrainian-search:4.9.1 (1 constraints: 10051b36)
 xerces:xercesImpl:2.12.0 (2 constraints: 1f14b675)
 
 [Test dependencies]
+com.beust:jcommander:1.35 (1 constraints: b50c1901)
+com.github.jnr:jffi:1.2.18 (1 constraints: b20902ab)
+com.github.jnr:jnr-constants:0.9.12 (4 constraints: ed2c9d5d)
+com.github.jnr:jnr-enxio:0.19 (2 constraints: 2a167d08)
+com.github.jnr:jnr-netdb:1.1.6 (1 constraints: 7e0952a1)
+com.github.jnr:jnr-posix:3.0.49 (2 constraints: f0161b5b)
+com.github.jnr:jnr-unixsocket:0.20 (1 constraints: 4a09d497)
+com.headius:backport9:1.1 (1 constraints: 1a098c8e)
+com.headius:invokebinder:1.11 (1 constraints: 4b09d797)
+com.headius:modulator:1.0 (1 constraints: 19098b8e)
+com.headius:options:1.4 (1 constraints: 1d098f8e)
+com.jcraft:jzlib:1.1.3 (1 constraints: 7b094fa1)
+com.martiansoftware:nailgun-server:0.9.1 (1 constraints: 800960a1)
 com.sun.jersey:jersey-servlet:1.19 (1 constraints: df04fa30)
+com.vaadin.external.google:android-json:0.0.20131108.vaadin1 (1 constraints: 34092a9e)
+joda-time:joda-time:2.9.9 (1 constraints: 8a0972a1)
 net.bytebuddy:byte-buddy:1.9.3 (2 constraints: 2510faaf)
 org.apache.hadoop:hadoop-hdfs:3.2.0 (1 constraints: 07050036)
 org.apache.hadoop:hadoop-minikdc:3.2.0 (1 constraints: 07050036)
@@ -223,7 +213,17 @@ org.apache.kerby:kerb-server:1.0.1 (1 constraints: 0405f135)
 org.apache.kerby:kerb-simplekdc:1.0.1 (1 constraints: 0405f135)
 org.apache.kerby:kerby-kdc:1.0.1 (1 constraints: 0405f135)
 org.apache.logging.log4j:log4j-1.2-api:2.13.2 (1 constraints: 3a053a3b)
+org.asciidoctor:asciidoctorj:1.6.2 (1 constraints: 0b050436)
+org.asciidoctor:asciidoctorj-api:1.6.2 (1 constraints: e30cfb0d)
 org.hsqldb:hsqldb:2.4.0 (1 constraints: 08050136)
+org.jruby:dirgra:0.3 (1 constraints: 1b098b8e)
+org.jruby:jruby:9.2.6.0 (1 constraints: 490d7d28)
+org.jruby:jruby-core:9.2.6.0 (1 constraints: 0f08b57d)
+org.jruby:jruby-stdlib:9.2.6.0 (1 constraints: 0f08b57d)
+org.jruby.jcodings:jcodings:1.0.41 (2 constraints: e3124361)
+org.jruby.joni:joni:2.1.25 (1 constraints: b00903ab)
+org.jsoup:jsoup:1.12.1 (1 constraints: 3705303b)
 org.locationtech.jts:jts-core:1.15.0 (1 constraints: 3905383b)
 org.mockito:mockito-core:2.23.4 (1 constraints: 3d05403b)
 org.objenesis:objenesis:2.6 (2 constraints: 5f0ffb79)
+org.slf4j:slf4j-simple:1.7.24 (1 constraints: 4005473b)